Former Mountain line

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Former Mountain Line
Native name舊山線
StatusSeasonal operation
OpenedSeptember 1903
Closed24 September 1998 (1998-09-24)
OwnerTaiwan Railways Administration
Line length15.9 km (9.9 mi)
Track gauge1,067 mm (3 ft 6 in)
Longteng Bridge

The Former Mountain line (Chinese: 舊山線; pinyin: Jiù Shānxiàn; Pe̍h-ōe-jī: Kū Soaⁿ-soàⁿ) is a railway branch line in Taiwan operated by the Taiwan Railways Administration. The name literally means "old Mountain line" (another name for the Taichung line) and can refer to any section of the Taichung line that ceased operations when it was replaced by a newer rail. However, the term is most widely used to refer to the segment between Sanyi and Houli stations.

The line suspended operations on September 24, 1998 with the opening of a newer route to the west, and all stations between Sanyi and Houli closed down. Between June 5-9, 2010, to promote tourism, the Former Mountain Line resumed service between Sanyi and Tai'an Old station using a steam locomotive numbered CK124.[1][2] The Taiwan Railways Administration also attempted to renovate the line for operation, but the construction bidding attracted no contractors. Since then, the Miaoli County Government has hosted an additional six events using steam locomotives.[3] Other than that, the line has no scheduled passenger services.


The Former Mountain line is 15.9 km long and runs parallel to the Taichung line. It uses a 1,067 mm (3 ft 6 in) gauge.

From Sanyi station, the line branches eastward and climbs to a height of 402.326 meters above sea level at Shengxing station, which is the highest point of any TRA track. From Shengxing, the track snakes through the mountains before passing through the site of the removed Yutengping station, bypassing Longteng Bridge, a destroyed railway bridge. Then, it crosses the Da'an River and arrives at Tai'an Old station before merging with the Taichung line again at Houli station.


Name Chinese Taiwanese Hakka Transfers and Notes Location
Sanyi 三義 Sam-gī Sâm-ngi Taiwan Railways Administration Taichung line Sanyi Miaoli
Shengxing 勝興 Sèng-heng Sṳn-hîn
Yutengping 魚藤坪 Hî-tîn-phiâⁿ Ǹg-thèn-phiâng Built in 2010 and removed in 2011. Near Longteng Bridge
Tai'an Old 泰安舊 Thài-an (Kū) Thai-ôn (Khiu) About 1 km from the current Tai'an Station Houli Taichung
Houli 后里 Āu-lí Heu-lî Taiwan Railways Administration Taichung line


  1. ^ 楊以諾 (October 16, 2010). "試營運結束 舊山線ROT本月招商". 公視. Retrieved January 6, 2019.
  2. ^ "Steam railway makes nostalgic return on mountain line - The China Post". 2010-06-06. Retrieved 2013-11-16.
  3. ^ "舊山線是苗栗最珍貴的鐵道文化資產~苗栗從未放棄舊山線蒸汽火車復駛 地方盼了20年只盼別再畫餅充饑". 苗栗縣政府. August 25, 2017. Retrieved January 6, 2019.